Trophic Cascades

A keystone species that is a critical food source for predator populations and increases the diversity of predators in an environment. For example, krill. This is referred to as a?

• keystone predator

• keystone prey

• keystone ecosystem engineer

• keystone plant

Tags

NGSS.MS-LS2-1

What would happen to an ECOSYSTEM if a KEYSTONE SPECIES DISAPPEARED?

• It would COLLAPSE or not be able to survive.

• It would help SUSTAIN the ecosystem.

• The FOOD WEB would stay the same.

• MIGRATORY species would arrive and take over.

Tags

NGSS.MS-LS2-2

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A side-effect when a certain species that usually helps to keep the entire ecosystem balanced is reduced or removed. When their numbers are changed there is an ecological imbalance.

• trophic level

• trophic cascade

• food web

• food chain

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A keystone species that keeps populations under control by hunting. This also impacts other species further down the food chain.

• keystone predator

• keystone prey

• keystone ecosystem engineer

• keystone plant

Tags

NGSS.MS-LS2-4

Sea otters are key to protecting coastal kelp forests but consuming sea urchins. Sea otters are which type of keystone species?

• predator

• prey

• plant

• ecosystem engineer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Starfish on shorelines will control mussels from overcrowding algae, limpets, anemones, and sponges by eating them. This helps maintain the biodiversity of the shore.

• predator

• prey

• plant

• ecosystem engineer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Keystone species are a ​ (a)   because they help to control ​ (b)   .

• limiting factor

• populations

• niche

• trophic level

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following are true about a keystone species?

• Is the GLUE that holds an ecosystem together.

• If it is removed, it will impact the structure and biodiversity of a habitat/ecostyem.

• It has NO impact on other organisms in an ecosystem.

• There is only 1 keystone species in every ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A keystone species that is a critical food source for predator populations. For example, krill.

• keystone predator

• keystone prey

• keystone ecosystem engineer

• keystone plant

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is a trophic cascade?

• A process that starts at the top of the food chain and tumbles down to the bottom

• A process that starts at the bottom of the food chain and moves up

• A process that affects only the primary producers

• A process that affects only the apex predators

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4